What Color Do Red and Green Make?

The Short Answer

The answer depends on what is being mixed. Red and green light combine to make yellow. Red and green paint or ink produce a dark, muddy color, usually a brown or olive. Both answers are correct because light and pigment follow different mixing models. For logo work this matters, because the same artwork is usually shown on screens, which mix light, and printed with ink, which absorbs it.

Mixing context | Color model | Red + green result

Screens, digital displays | Additive (RGB) | Yellow

Paint and art pigments | Subtractive (traditional red-yellow-blue) | Brown or muddy dark tone

Process printing inks | Subtractive (CMYK) | Dark olive or brownish tone, depending on ink amounts

Vector software, normal blending | No mixing; the top object covers the one beneath | Whichever color is on top

Why Light Makes Yellow

Screens build color by adding red, green and blue light. When full red and full green light overlap with no blue, the eye perceives yellow. In hexadecimal color values, the yellow channel combination is simply the red and green channels both switched on.

Red     #FF0000   (R 255, G 0,   B 0)
Green   #00FF00   (R 0,   G 255, B 0)
Added   #FFFF00   (R 255, G 255, B 0)  = yellow

This additive result describes light overlapping at full strength. It is not what happens when two filled shapes overlap in a logo file, as explained below.

Why Paint and Ink Make Brown

Pigments work by absorbing parts of the light spectrum and reflecting the rest. Red pigment absorbs much of the green and blue light, and green pigment absorbs much of the red. Combine them and very little light is reflected, so the result is dark. In the traditional red-yellow-blue color wheel, red and green sit opposite each other as complementary colors, and mixing complements tends to neutralize them into brown, gray or a dull olive.

Process printing uses cyan, magenta, yellow and black inks. A printed red is typically built from magenta and yellow, and a printed green from cyan and yellow. Overlaying both puts all three colored inks on the page with a heavy yellow component, which reads as a dark olive or brown. The exact tone depends on the ink percentages, the paper and the press, so it cannot be predicted precisely without a proof.

What Happens When Red and Green Overlap in a Vector Logo

In vector design software, overlapping filled shapes do not mix by default. With normal blending at full opacity, the shape on top simply hides the part of the shape beneath it. A third color appears only when transparency, a blend mode, a gradient or print overprint is applied. Each of these behaves differently:

• Opacity: reducing the top shape's opacity lets the lower color show through, producing an in-between tone rather than a true light or pigment mix.
• Screen or Lighten blend modes: these brighten, so full red over full green displays as yellow, matching the additive result.
• Multiply or Darken blend modes: these darken, so full red over full green displays as black in RGB, because each color removes the channel the other one supplies.
• Gradients: a straight blend from red to green passes through a dull midpoint. Interpolating the hex values evenly gives roughly #808000, an olive tone. Some applications interpolate in other color spaces, so the midpoint can look different from tool to tool.
• Overprint in print output: if one ink is set to overprint the other, the inks physically combine on press and produce the dark subtractive result.

No tool-specific test evidence was supplied for this article, so the exact rendering of blend modes and gradient midpoints in a particular application or version has not been verified here. Check the software's documentation and preview the result in the target output.

Practical Implications for Logo Palettes

If a logo needs a yellow, olive or brown where red and green meet, the dependable approach is to draw that area as its own shape with its own defined color. Relying on transparency or blend modes to create the color makes the result depend on the software and file format. Some export paths flatten transparency, some formats do not support certain blend modes, and print workflows may treat overprint differently from screen previews. A separately filled shape keeps the color consistent across every file you deliver.

For delivery, specify each palette color directly for each output: a hex or RGB value for screens, a CMYK build for process printing, and a spot color reference where one is used. Converting red and green between these models can shift their appearance, and the shift is often most noticeable in bright greens. Confirm conversions with a soft proof or a printed proof rather than assuming the screen version will match.

Red and green together also raise an accessibility concern. Red-green color vision deficiency is the most common form of color blindness, and people with it may struggle to tell the two hues apart, especially when they have similar lightness. If a red-and-green logo depends on the contrast between the two colors to be read, test it in grayscale and with a color-blindness simulator. Increase the lightness difference between the colors or separate them with shape or outline so the mark still reads without relying on hue.

Checking Your Own File

A filename or extension does not show how overlapping red and green areas were built. Open the artwork in an editor and inspect it. Check whether the overlapping region is its own filled path or a transparency or blend effect. Check whether an embedded raster image is supplying the color, and whether any overprint settings are active. The file only behaves predictably across screen and print if the colors you see are defined as real vector fills.